I've got a old half dead 8,000 ramsey on the front of my tilt bed with long a$$ cables, just pop the hood on the tow rig and hook them up. It's been getting the job done for over 10+ junkers in the last 2 months, 2 of them didn't even have tires on them.

When my plow truck died (3/4 ton chebby) my cables weren't long enough to reach the battery on my buddies 4 door super duty so I just grabbed my optima set it next to the winch and it pulled a rolling vehicle with out hesitation, or killing the bat.

Its a hellalot better than using a highlift and a chain/ or pushing to get something on a trailer